RFI

Radio Frequency Interference (RFI) at LWA1: Yeah, we have some of that. But, the RFI situation is surprisingly good – many observations are possible with no RFI mitigation or just simple time-frequency editing, as demonstrated in these results. Rule 1: Night is much better than day. For long integrations at certain frequencies and times-of-day, a little extra RFI mitigation kung-fu may be required. Rule 2: Be especially careful about observing in the NTSC and ATSC (TV) channels between 54 and 88 MHz, where we receive intermittent reflections from meteor trails and other things in the sky.